Cleft and Geological fault

Cleft noun - An irregular usually narrow break in a surface created by pressure.

Geological fault and cleft are semantically related. In some cases you can replace phrase "Geological fault" with "Cleft", this terms are similar.

Geological fault noun - (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other.

Cleft and geological fault are semantically related. You can use "Cleft" instead a noun phrase "Geological fault".